Finding the Fourth Proportional to 16,864.17, 23,272.55 and 9,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,864.17 : 23,272.55 = 9,310.50 : x
2. Step 2: Convert to fraction form
   16,864.17/23,272.55 = 9,310.50/x
3. Step 3: Cross multiply
   16,864.17x = 23,272.55 × 9,310.50
4. Step 4: Simplify right side
   16,864.17x = 216,679,076.78
5. Step 5: Solve for x
   x = 216,679,076.78/16,864.17
6. Step 6: Final answer
   x = 12,848.49